105 lines
3.5 KiB
Dart
105 lines
3.5 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:pdf_signature/ui/features/pdf/widgets/pdf_page_area.dart';
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import 'package:pdf_signature/ui/features/pdf/view_model/view_model.dart';
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import 'package:pdf_signature/data/services/export_providers.dart';
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void main() {
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testWidgets('placed signature stays attached on zoom (mock continuous)', (
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tester,
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) async {
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const Size uiPageSize = Size(400, 560);
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// Test harness that exposes the ProviderContainer to mutate state
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late ProviderContainer container;
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Widget buildHarness({required double width}) {
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return ProviderScope(
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overrides: [
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// Force mock viewer for predictable layout; pageViewModeProvider already falls back to 'continuous'
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useMockViewerProvider.overrideWithValue(true),
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],
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child: Builder(
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builder: (context) {
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container = ProviderScope.containerOf(context);
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return Directionality(
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textDirection: TextDirection.ltr,
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child: MaterialApp(
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home: Scaffold(
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body: Center(
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child: SizedBox(
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width: width,
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// Keep aspect ratio consistent with uiPageSize
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child: PdfPageArea(
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pageSize: uiPageSize,
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onDragSignature: (_) {},
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onResizeSignature: (_) {},
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onConfirmSignature: () {},
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onClearActiveOverlay: () {},
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onSelectPlaced: (_) {},
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),
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),
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),
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),
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),
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);
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},
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),
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);
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}
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// Initial pump at base width
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await tester.pumpWidget(buildHarness(width: 480));
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// Open sample and add a normalized placement to page 1
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container.read(pdfProvider.notifier).openSample();
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// One placement at (25% x, 50% y), size 10% x 10%
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container
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.read(pdfProvider.notifier)
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.addPlacement(
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page: 1,
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rect: const Rect.fromLTWH(0.25, 0.50, 0.10, 0.10),
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);
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await tester.pumpAndSettle();
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// Find the first page stack and the placed signature widget
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final pageStackFinder = find.byKey(const ValueKey('page_stack_1'));
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expect(pageStackFinder, findsOneWidget);
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final placedFinder = find.byKey(const Key('placed_signature_0'));
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expect(placedFinder, findsOneWidget);
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final pageBox = tester.getRect(pageStackFinder);
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final placedBox1 = tester.getRect(placedFinder);
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// Compute normalized position within the page container
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final relX1 = (placedBox1.left - pageBox.left) / pageBox.width;
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final relY1 = (placedBox1.top - pageBox.top) / pageBox.height;
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// Simulate zoom by doubling the available width
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await tester.pumpWidget(buildHarness(width: 960));
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// Maintain state across rebuild
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await tester.pumpAndSettle();
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final pageBox2 = tester.getRect(pageStackFinder);
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final placedBox2 = tester.getRect(placedFinder);
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final relX2 = (placedBox2.left - pageBox2.left) / pageBox2.width;
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final relY2 = (placedBox2.top - pageBox2.top) / pageBox2.height;
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// The relative position should stay approximately the same
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expect(
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(relX2 - relX1).abs() < 0.01,
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isTrue,
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reason: 'X should remain attached',
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);
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expect(
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(relY2 - relY1).abs() < 0.01,
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isTrue,
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reason: 'Y should remain attached',
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);
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});
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}
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